In reference to Ether 12:26-28

the Lord does not address in this passage the question of our human "weaknesses" (plural) but the question of human "weakness" (singular).  The difference is crucial.  The Lord is not claiming to be responsible for the particulars of whatever various sins or weaknesses we may have.  However, the Lord does claim to he "gives unto men weakness."  The weakness referred to here is constiutive and essential. Rather than naming our sinfulness it names precisely the opposite.  Weakness names our createdness, our lack of autonomous sovereignty, our persistent dependence on God and his grace for life and agency.  In short, weakness names our essential relatedness to God and, thus, our unity with him.  Or, again: our weakness is God's grace.

Adam S. Miller, Rube Goldberg Machines, pg. 104